KLS8080I/IPS is designed by opto-isolated technology.We specify 8-30V for power supply which must be isolated from main battery pack B+/B-.You may use an isolated DCDC converter or a separate 12V battery for power supply. "KLS8080I" is supposed to work with BLDC motor with hall sensors. "KLS8080IPS" can work with brushless motor with Sin/Cosin speed sensors.